Hi guys Just a little thing I found when doing the maths on the Perth mint assay bars. The 20g bar has a bit of a error when it comes to AGW in Troy Oz Decimal accuracy has been maintained using the full weight of a Troy Oz to 7 decimal places (31.1034768g) to prevent rounding errors / = divide 20g / 31.1034768 = 0.64301493 oz The mint states it’s 0.640 oz on the packaging, giving a difference of 0.003 Troy Oz 0.640 x 31.1034768 = 19.9062252g So it’s almost 0.1g under weight, yet the minimal gross weight states 20g with the assumption of no weight variance from design in this instance. The others are all pretty close as shown below 1g Label = 0.032oz Calc = 0.03215075oz Dif = Less than 3DP 5g Label = 0.161oz Calc = 0.16075373oz Dif = Less than 3DP 10g Label = 0.320oz Calc = 0.32150747oz Dif = 0.00150747oz 50g Label = 1.607oz Calc = 1.60753733 Dif = Less than 3DP 100g Label = 3.215oz Calc = 3.21507466 Dif = Less than 3DP Anyone know the reasoning for this? Keen to hear what you guys think
Did u weigh ur 20g bar? If it's 20g then dun care too much about the oz conversion, u got what u paid for.. Perth mint calls their shishi coins pixiu, English is not there string suit..
